Ok, mabey there is some of what you suggest out there, but I think you're still missing some of the dynamics of the situation. Let's put you in the hypothetical example for a moment. Lets say (hypothetically) JMFJ is a hot stick that has been around awhile. Lets say JMFJ has tangled with leviathn over the years and had some good fights, lost some, won some. Then there was an incident like you described. What would be the point of challenging a duel? You both have fought each other enough to be familure with where each others proficencies are. There is reallly nothing to prove. Its just like anywhere else in life...a friend might pull a prank on you and you'll laugh about it, if a stranger does the same thing, you'll likely be ticked off.
There is also somewhat of a gunslinger syndrome out there, where some punk who thinks they just learned all there is to learn, feels the need to annoy a 'name' pilot into the DA to try to prove they are the fastest gun in the west. That actually flies in the face of what you are saying.